Full control over your research infrastructure.
Qlarr is fully open-source. Access the code, self-host on your own infrastructure, and run your research without platform limitations or vendor dependency.
What open-source means for Qlarr
Open-source is not a marketing label for us. It is how Qlarr is built and how it operates. Every line of code is accessible, auditable, and deployable on infrastructure you control. No black boxes, no locked-in data, no dependencies you didn't agree to.
What you gain with full control
Own your data completely
When you self-host Qlarr, your survey data never leaves your infrastructure. No third-party access, no platform risk, no surprises. You control where data is stored, how it is backed up, and who can access it.
No vendor lock-in
Your surveys, your logic, your data — all in open formats you can export, migrate, or build on at any time. Switching tools or moving infrastructure doesn't mean losing your work.
Extend and adapt the platform
Integrate Qlarr into existing research infrastructure, customize workflows for your organization, or contribute improvements back to the project. The codebase is built to be extended without breaking core behavior.
Deploy in 5 minutes
Qlarr is built for practical deployment. Get your own instance running on any infrastructure in 6 simple steps with our deployment guide — no specialized DevOps knowledge required.
Built on open, predictable technology
Qlarr's architecture is designed for complex research environments — from logic-heavy survey design to distributed offline fieldwork. The state-machine survey runtime, offline sync engine, and AI-ready JSON format are all open and auditable.
Deterministic JavaScript state machine for reliable survey logic
Conflict-safe offline sync across devices and environments
Structured JSON survey format optimized for AI and automation
Unified runtime across web and Android — identical behavior everywhere
Open Source vs. Qlarr Cloud
Both options share the same core platform. The difference is who manages the infrastructure.
| Feature | Open Source | Qlarr Cloud |
|---|---|---|
| All core survey features | ||
| Online and offline data collection | ||
| Field verification (GPS, timestamps, audio) | ||
| API access and data export | ||
| White-label (no Qlarr branding) | ||
| Qlarr AI survey generation | Connect your own AI provider | |
| Managed updates and infrastructure | ||
| Team support and onboarding |
Get involved
Qlarr is built with the research community in mind. If you use Qlarr for your work, we'd love to have you involved — whether that means reporting an issue, suggesting a feature, or contributing code.